Evolvability is best addressed from a multi-level, macroevolutionary perspective through a
comparative approach that tests for among-clade differences in phenotypic diversification in …

Approaches to macroevolution require integration of its two fundamental components, ie the
origin and the sorting of variation, in a hierarchical framework. Macroevolution occurs in …

A fuller understanding of the role of developmental bias in shaping large‐scale evolutionary
patterns requires integrating bias (the probability distribution of variation accessible to an …

Two main types of intraspecific variation can be distinguished in ammonoids, which are not
mutually exclusive: continuous and discontinuous variation. Although many authors …

The concept of evolvability—the capacity of a population to produce and maintain
evolutionarily relevant variation—has become increasingly prominent in evolutionary …

Background A major goal of evolutionary developmental biology is to discover general
models and mechanisms that create the phenotypes of organisms. However, universal …

A three-dimensionally preserved 2-mm-long larva of the arthropod Leanchoilia illecebrosa
from the 520-million-year-old early Cambrian Chengjiang biota of China represents the first …

A great number of new studies have been carried out on ammonoid embryonic development
in the last two decades. We focus here on novel developments and interpretations in the …

Australia's native wild dog, the dingo (Canis dingo), is threatened by hybridization with feral
or domestic dogs. In this study we provide the first comprehensive three dimensional …

Throughout the evolutionary history of life, only three vertebrate lineages took to the air by
acquiring a body plan suitable for powered flight: birds, bats, and pterosaurs. Because …